{"product_id":"cesailemimbf4","title":"[EMIM][BF4] (1-Ethyl-3-methylimidazolium tetrafluoroborate, 99.5%) Ionic Liquid as Electrolyte Solvent and Additive, 25 g\/bottle, CESAILEMIMBF4","description":"\u003cp\u003eEMIMBF4 (1-Ethyl-3-methylimidazolium tetrafluoroborate) is a popular and widely studied example of an ionic liquid (IL) used as an electrolyte component in various electrochemical devices, particularly batteries and supercapacitors. It serves as the high-stability, non-flammable solvent into which a mobile metal salt is dissolved (e.g., LiTFSI, NaTFSI, or KTFSI) to create the working electrolyte.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLithium-Ion Battery (LIB) Additive\u003c\/strong\u003e: Used in small concentrations (1–5%) within standard carbonate-based electrolytes. (1) Flame Retardancy: It significantly reduces the flammability of the electrolyte, improving safety. (2) SEI Formation: It can assist in the formation of a more stable Solid Electrolyte Interphase (SEI) on the anode, especially in high-voltage cells.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCO2 Electroreduction (CO2RR)\u003c\/strong\u003e: This is perhaps the most famous application for [EMIM][BF4]. The [EMIM]+ cation acts as a co-catalyst. It adsorbs onto the catalyst surface (like Silver or Gold) and forms a complex with CO2, lowering the activation energy barrier for the formation of the *CO2'- radical intermediate. It is highly effective at suppressing the Hydrogen Evolution Reaction (HER) and promoting the production of Carbon Monoxide (CO) at very low overpotentials.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupercapacitors\u003c\/strong\u003e: [EMIM][BF4] is used as an electrolyte to increase the energy density of carbon-based supercapacitors. While aqueous electrolytes limit supercapacitors to ~1.2 V, [EMIM][BF4] allows operation up to 3.0 V or higher, which will increase the energy density since doubling the voltage quadruples the energy stored. \u003c\/p\u003e\n\u003ctable style=\"width: 100%; height: 343.8px;\" width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 35.6px;\"\u003e\u003cem\u003ePart Number\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003eCESAILEMIMBF4 (C-ESA-ILEMIMBF4)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 35.6px;\"\u003e\u003cem\u003eCAS\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e143314-16-3\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 123px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 123px;\"\u003e\u003cem\u003eChemical Formula\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 123px;\"\u003e\n\u003cp\u003eC6H11BF4N2\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg style=\"margin-bottom: 16px; float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CBESEMIMBF4_molecular_structure_160x160.png?v=1765178807\"\u003e\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 55.2px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 55.2px;\"\u003e\u003cem\u003eAppearance\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 55.2px;\"\u003e\n\u003cp\u003e\u003cspan\u003eColorless liquid\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 35.6px;\"\u003e\n\u003cstrong\u003e \u003c\/strong\u003e\u003cem\u003ePurity\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e99.5% (Battery Grade)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 19.6px;\"\u003e\u003cem\u003eMolecular Weight\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 19.6px;\"\u003e\u003cspan\u003e197.97 g\/mol\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 19.6px;\"\u003e\u003cem\u003eDensity\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 19.6px;\"\u003e\u003cspan\u003e1.294 g\/cm3\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 19.6px;\"\u003e\u003cem\u003ePackage Size\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 19.6px;\"\u003e\u003cspan\u003e25 or 100 g\/bottle\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eNotes\u003c\/strong\u003e: Please try to store the EMIMBF4 ionic liquid in the dry place. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eReferences\u003c\/strong\u003e: \u003c\/span\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003cspan\u003e\u003ca href=\"https:\/\/pubs.acs.org\/doi\/abs\/10.1021\/jp0476601\"\u003eK. Hayamizu, et al. Ionic Conduction and Ion Diffusion in Binary Room-Temperature Ionic Liquids Composed of [emim][BF4] and LiBF4, J. Phys. Chem. B 2004, 108, 50, 19527–19532\u003c\/a\u003e.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003ca href=\"https:\/\/pubs.acs.org\/doi\/abs\/10.1021\/acs.jced.3c00037\"\u003eSapna Rana, et al. Investigating the Solvation Behavior of Some Lithium Salts in Binary Aqueous Mixtures of 1-Ethyl-3-methylimidazolium Tetrafluoroborate ([EMIM][BF4]) at Equidistant Temperatures (T = 298.15, 303.15, 308.15, 313.15, 318.15) K, J. Chem. Eng. Data 2023, 68, 6, 1291–1304.\u003c\/a\u003e \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003ca href=\"https:\/\/pubs.acs.org\/doi\/abs\/10.1021\/acs.jpcc.5c03689\"\u003eN. Karki et al., Modulation of Selectivity in Electrocatalytic CO2 Reduction with a Magnetic Field and Imidazolium Ionic Liquids, J. Phys. Chem. C 2025, 129, 32, 14356–14365\u003c\/a\u003e. \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003ca href=\"https:\/\/pubs.acs.org\/doi\/abs\/10.1021\/acssuschemeng.3c00213\"\u003eX. Jiang, et al., Additive Engineering Enables Ionic-Liquid Electrolyte-Based Supercapacitors To Deliver Simultaneously High Energy and Power Density, ACS Sustainable Chem. Eng. 2023, 11, 14, 5685–5695\u003c\/a\u003e. \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"NDSYS","offers":[{"title":"25 g","offer_id":47021496107238,"sku":"CESAILEMIMBF4G25","price":69.0,"currency_code":"USD","in_stock":true},{"title":"100 g","offer_id":47021496140006,"sku":"CESAILEMIMBF4G100","price":199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CESAILEMIMBF4_main.png?v=1771910972","url":"https:\/\/echemsupplies.com\/products\/cesailemimbf4","provider":"EChem Supplies","version":"1.0","type":"link"}